A 5

1. Monolingual
A monolingual dictionary uses the same language for the entries and their definitions. Dictionaries are familiar reference books. You most often use a dictionary to learn the meaning of a word or check its spelling. A dictionary offers much more, however, and is often under used by college students and English language learners. In addition to defining words, dictionaries also provide the pronunciation, part of speech, spelling variations, most common to least common meaning usage for each entry, appropriateness of usage, the etymology of the word and in some cases, synonyms and/or antonyms. And that's just for the word you are looking up. Good, quality dictionaries can also contain international and state capitals, conversions of weights and measures, examples of other alphabets, explanations of foreign phrases, diagrams of language families, an explanation of English grammar and the list goes on.
http://dictionary.reference.com/http://oxforddictionaries.com/?attempted=truehttp://dictionary.cambridge.org/http://www.collinslanguage.comhttp://www.thefreedictionary.com/http://www.merriam-webster.com
http://www.ldoceonline.com/
http://encarta.msn.com/encnet/features/dictionary/dictionaryhome.aspx
http://dictionary.infoplease.com/
http://www.onelook.com/


2. Bilingual
A bilingual dictionary gives words in two languages. Each language is grouped alphabetically in separate halves of the book, with translations into the other language. Here there are some examples of websites where everyone can find bilinguals dictionaries which are online and completely free.
http://www.systran.co.uk/translation-dictionaryhttp://www.wordmagicsoft.com/dictionary/tools/index.phphttp://www.spanishdict.com/http://www.lingo24.com/contextrans-spanish-english-translation-service.htmlhttp://www.freetranslation.com/http://www.ectaco.com/English-Spanish-Dictionary/
http://www.cucumis.org/traduccion_4_w/
http://translation.sensagent.com/bilingual+dictionary/en-es/
http://translateandsave.com/free-human-translation.htm
http://www.lingvosoft.com/English-Spanish-Dictionary/


3. Plurilingual
Multilingualism is the use of two or more languages, either by an individual speaker or by a community of speakers. Multilingual speakers outnumber monolingual speakers in the world's population.
http://www.apex-translations.com
http://www.lexicool.com
http://www.langtolang.com/
http:www.multilingualbooks.com/
http:www.websters-online-dictionary.org/
http://www.xpresstranslations.com/online_dictionaries.html
http://www.google.com/dictionary
http:www.wordreference.com


4. Synonyms and antonyms An antonym is a word that expresses a meaning that is opposed to the meaning of another word. An antonym therefore, is the antonym of synonym. Synonyms are more common, and in fact most dictionaries use synonyms to define words by providing other words with the same meaning. Antonyms, on the other hand, are not typically used as reference, but can still be fun to know about. Antonyms come in all different types –graded antonyms, complementary antonyms, and relational antonyms. The online dictionaries are a great tool for students and teachers.
http://www.synonym.com/
http://www.synonym.org/
http://dictionary.reverso.net/English-synonyms/
http://www.synonyms.net/
http://diccionario.sensagent.com/
http://www.firstschoolyears.com/literacy/word/other/synonyms/synonyms.htm
http://www.babylon.com/define/92/Synonym-Antonyms.html


5. Specific When you are doing research on a topic, you will often require a quick definition of a term, a specific fact, or condensed, detailed information about particular topics. Then you should look for in a specific dictionary.
MedicineA free online medical dictionary search engine for definitions of medical terminology, pharmaceutical drugs, healthcare equipment, health conditions, medical devices, specialty terms and medical abbreviations.
http://www.123teachme.com/medical_dictionary
http://www.online-medical-dictionary.org/
http://medical-dictionary.thefreedictionary.com/
http://www.online-medical-dictionary.org/
http://www.medilexicon.com/medicaldictionary.php
http://www.medic8.com/MedicalDictionary.htm
http://medical-dictionary.com/
http://www.hyperdictionary.com/medical
http://www.mondofacto.com/dictionary/
http://www.medicaldictionaryweb.com/
http://www.medterms.com/script/main/hp.asp

Economy:
http://www.economist.com/research/economics/
http://www.tuition.com.hk/dictionary/
http://www.economics-dictionary.com/
http://www.economypedia.com/
http://www.investopedia.com/dictionary/
http://www.financialdictionary.net/
http://www.babylon.com/define/35/Economics-Dictionary.html
http://economics.about.com/od/economicsglossary/Glossary_of_Economics_Terms_Economics_Dictionary.htm
http://financial-dictionary.thefreedictionary.com/

Law:A free online
law dictionary search engine for definitions of law terminology & legal terms.

http://dictionary.lp.findlaw.com/
http://legal-dictionary.thefreedictionary.com/
http://www.law-dictionary.org/
http://www.duhaime.org/LegalDictionary.aspx
http://dictionary.law.com/
http://www.law.com/jsp/law/index.jsp
http://www.lectlaw.com/ref.html
http://legal-dictionary.thefreedictionary.com/
http://www.law-dictionary.org/
http://www.lawguru.com/dictionary/